Uniform CSS v1.2 released with new localized important and JSON output mode! Release note

Naming Principles

How properties are named for scale and consistency.

Naming Principles

Due to the immutable and low-level nature of utility classes, Uniform takes a careful and considered approach to how each shorthand and variants are named to ensure they are consistent and easy to remember.

Principles we follow

The following is a list of principles Uniform follows when considering how properties and its variants are named.

1. Make use of verbose values

If the property values are verbose, self explanatory, and non-conflicting, then use the value as the shorthand.

.block { display: block; }
.ease-in-out { transition-timing-function: ease-in-out; }
.underline { color-decoration: underline; }

2. Truncate long property names

If the property name include words that can be shortened without confusion, shorten it.

.bg-black: { background-color: black; }
.bg-white: { background-color: white; }

3. Single-letter shorthands

Single-characters are only reserved for directions and width, height, margin, and padding properties e.g. w, h, m, p. For single letter properties, don't separate direction using a delimiter. For example, use mr for margin right instead of m-r.

.w-1: { width: 0.25rem; }
.p-2: { padding: 0.5rem; }

.mr-1: { margin-right 0.25rem; }
.mb-1: { margin-bottom 0.25rem; }

4. Single characters for directions

Common directional properties such as top, right, bottom, and left are represented with the first letter of the direction e.g. border-t for border-top etc. For multiple direction, combine the direction letters e.g. tr for top-right.

.radius-tl-sm. { border-top-left-radius: 0.25rem; }
.radius-tr-sm. { border-top-right-radius: 0.25rem; }

5. Simplify properties names

Simplify the property name to its most essential and ideal denominator, provided it does not cause confusion or conflict with others properties in the same family.

.text-left { text-align: left; }
.align-middle { vertical-align: middle; }
.font-xl { font-size: 1.25rem; }

When dealing with multi-word properties such as line-height, simplifying it to just height or line would misrepresent the meaning and cause confusion. In this case, use a different industry term such as leading instead.

6. Append unit as characters

Whenever conflicting situations arise, over-qualify the unit by appending an abbreviated characters that represent the unit. All negative values are suffixed with n, (short for negative).

50p: 50%,
n50p: -50%,
100p: 100%, // p for percent
n100p: -100%,

100vw: 100vw, // vw for viewport width
100vh: 100vh, // vw for viewport width